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#1 2009-08-17 09:44:03
- JohannesE
- Member
- Registered: 2009-08-17
- Posts: 22
Unmounting root fs fails on shutdown
Hey all,
since a few days my root filesystem refuses to umount on shutdown claiming it were busy. On every bootup a recovery is done which bothers me. The failing umount suggests using lsof to find the process causing the problem. I switched to runlevel 1 and did so, but the output is not very helpful for me...
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
init 1 root cwd DIR 8,5 4096 2 /
init 1 root rtd DIR 8,5 4096 2 /
init 1 root txt REG 8,5 31352 37632 /sbin/init
init 1 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
init 1 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
init 1 root 10u FIFO 0,12 0t0 1195 /dev/initctl
kthreadd 2 root cwd DIR 8,5 4096 2 /
kthreadd 2 root rtd DIR 8,5 4096 2 /
kthreadd 2 root txt unknown /proc/2/exe
migration 3 root cwd DIR 8,5 4096 2 /
migration 3 root rtd DIR 8,5 4096 2 /
migration 3 root txt unknown /proc/3/exe
ksoftirqd 4 root cwd DIR 8,5 4096 2 /
ksoftirqd 4 root rtd DIR 8,5 4096 2 /
ksoftirqd 4 root txt unknown /proc/4/exe
watchdog/ 5 root cwd DIR 8,5 4096 2 /
watchdog/ 5 root rtd DIR 8,5 4096 2 /
watchdog/ 5 root txt unknown /proc/5/exe
migration 6 root cwd DIR 8,5 4096 2 /
migration 6 root rtd DIR 8,5 4096 2 /
migration 6 root txt unknown /proc/6/exe
ksoftirqd 7 root cwd DIR 8,5 4096 2 /
ksoftirqd 7 root rtd DIR 8,5 4096 2 /
ksoftirqd 7 root txt unknown /proc/7/exe
watchdog/ 8 root cwd DIR 8,5 4096 2 /
watchdog/ 8 root rtd DIR 8,5 4096 2 /
watchdog/ 8 root txt unknown /proc/8/exe
events/0 9 root cwd DIR 8,5 4096 2 /
events/0 9 root rtd DIR 8,5 4096 2 /
events/0 9 root txt unknown /proc/9/exe
events/1 10 root cwd DIR 8,5 4096 2 /
events/1 10 root rtd DIR 8,5 4096 2 /
events/1 10 root txt unknown /proc/10/exe
khelper 11 root cwd DIR 8,5 4096 2 /
khelper 11 root rtd DIR 8,5 4096 2 /
khelper 11 root txt unknown /proc/11/exe
async/mgr 12 root cwd DIR 8,5 4096 2 /
async/mgr 12 root rtd DIR 8,5 4096 2 /
async/mgr 12 root txt unknown /proc/12/exe
kblockd/0 13 root cwd DIR 8,5 4096 2 /
kblockd/0 13 root rtd DIR 8,5 4096 2 /
kblockd/0 13 root txt unknown /proc/13/exe
kblockd/1 14 root cwd DIR 8,5 4096 2 /
kblockd/1 14 root rtd DIR 8,5 4096 2 /
kblockd/1 14 root txt unknown /proc/14/exe
kacpid 15 root cwd DIR 8,5 4096 2 /
kacpid 15 root rtd DIR 8,5 4096 2 /
kacpid 15 root txt unknown /proc/15/exe
kacpi_not 16 root cwd DIR 8,5 4096 2 /
kacpi_not 16 root rtd DIR 8,5 4096 2 /
kacpi_not 16 root txt unknown /proc/16/exe
kseriod 17 root cwd DIR 8,5 4096 2 /
kseriod 17 root rtd DIR 8,5 4096 2 /
kseriod 17 root txt unknown /proc/17/exe
khungtask 18 root cwd DIR 8,5 4096 2 /
khungtask 18 root rtd DIR 8,5 4096 2 /
khungtask 18 root txt unknown /proc/18/exe
pdflush 19 root cwd DIR 8,5 4096 2 /
pdflush 19 root rtd DIR 8,5 4096 2 /
pdflush 19 root txt unknown /proc/19/exe
kswapd0 21 root cwd DIR 8,5 4096 2 /
kswapd0 21 root rtd DIR 8,5 4096 2 /
kswapd0 21 root txt unknown /proc/21/exe
aio/0 22 root cwd DIR 8,5 4096 2 /
aio/0 22 root rtd DIR 8,5 4096 2 /
aio/0 22 root txt unknown /proc/22/exe
aio/1 23 root cwd DIR 8,5 4096 2 /
aio/1 23 root rtd DIR 8,5 4096 2 /
aio/1 23 root txt unknown /proc/23/exe
crypto/0 24 root cwd DIR 8,5 4096 2 /
crypto/0 24 root rtd DIR 8,5 4096 2 /
crypto/0 24 root txt unknown /proc/24/exe
crypto/1 25 root cwd DIR 8,5 4096 2 /
crypto/1 25 root rtd DIR 8,5 4096 2 /
crypto/1 25 root txt unknown /proc/25/exe
ata/0 450 root cwd DIR 8,5 4096 2 /
ata/0 450 root rtd DIR 8,5 4096 2 /
ata/0 450 root txt unknown /proc/450/exe
ata/1 452 root cwd DIR 8,5 4096 2 /
ata/1 452 root rtd DIR 8,5 4096 2 /
ata/1 452 root txt unknown /proc/452/exe
ata_aux 453 root cwd DIR 8,5 4096 2 /
ata_aux 453 root rtd DIR 8,5 4096 2 /
ata_aux 453 root txt unknown /proc/453/exe
scsi_eh_0 457 root cwd DIR 8,5 4096 2 /
scsi_eh_0 457 root rtd DIR 8,5 4096 2 /
scsi_eh_0 457 root txt unknown /proc/457/exe
scsi_eh_1 473 root cwd DIR 8,5 4096 2 /
scsi_eh_1 473 root rtd DIR 8,5 4096 2 /
scsi_eh_1 473 root txt unknown /proc/473/exe
scsi_eh_2 483 root cwd DIR 8,5 4096 2 /
scsi_eh_2 483 root rtd DIR 8,5 4096 2 /
scsi_eh_2 483 root txt unknown /proc/483/exe
scsi_eh_3 484 root cwd DIR 8,5 4096 2 /
scsi_eh_3 484 root rtd DIR 8,5 4096 2 /
scsi_eh_3 484 root txt unknown /proc/484/exe
kjournald 564 root cwd DIR 8,5 4096 2 /
kjournald 564 root rtd DIR 8,5 4096 2 /
kjournald 564 root txt unknown /proc/564/exe
kondemand 900 root cwd DIR 8,5 4096 2 /
kondemand 900 root rtd DIR 8,5 4096 2 /
kondemand 900 root txt unknown /proc/900/exe
kondemand 905 root cwd DIR 8,5 4096 2 /
kondemand 905 root rtd DIR 8,5 4096 2 /
kondemand 905 root txt unknown /proc/905/exe
ksuspend_ 1409 root cwd DIR 8,5 4096 2 /
ksuspend_ 1409 root rtd DIR 8,5 4096 2 /
ksuspend_ 1409 root txt unknown /proc/1409/exe
khubd 1469 root cwd DIR 8,5 4096 2 /
khubd 1469 root rtd DIR 8,5 4096 2 /
khubd 1469 root txt unknown /proc/1469/exe
hd-audio0 1914 root cwd DIR 8,5 4096 2 /
hd-audio0 1914 root rtd DIR 8,5 4096 2 /
hd-audio0 1914 root txt unknown /proc/1914/exe
kpsmoused 2006 root cwd DIR 8,5 4096 2 /
kpsmoused 2006 root rtd DIR 8,5 4096 2 /
kpsmoused 2006 root txt unknown /proc/2006/exe
iwl3945 2007 root cwd DIR 8,5 4096 2 /
iwl3945 2007 root rtd DIR 8,5 4096 2 /
iwl3945 2007 root txt unknown /proc/2007/exe
phy0 2017 root cwd DIR 8,5 4096 2 /
phy0 2017 root rtd DIR 8,5 4096 2 /
phy0 2017 root txt unknown /proc/2017/exe
kmmcd 2081 root cwd DIR 8,5 4096 2 /
kmmcd 2081 root rtd DIR 8,5 4096 2 /
kmmcd 2081 root txt unknown /proc/2081/exe
khpsbpkt 2087 root cwd DIR 8,5 4096 2 /
khpsbpkt 2087 root rtd DIR 8,5 4096 2 /
khpsbpkt 2087 root txt unknown /proc/2087/exe
knodemgrd 2248 root cwd DIR 8,5 4096 2 /
knodemgrd 2248 root rtd DIR 8,5 4096 2 /
knodemgrd 2248 root txt unknown /proc/2248/exe
usbhid_re 3320 root cwd DIR 8,5 4096 2 /
usbhid_re 3320 root rtd DIR 8,5 4096 2 /
usbhid_re 3320 root txt unknown /proc/3320/exe
bluetooth 3446 root cwd DIR 8,5 4096 2 /
bluetooth 3446 root rtd DIR 8,5 4096 2 /
bluetooth 3446 root txt unknown /proc/3446/exe
kjournald 3463 root cwd DIR 8,5 4096 2 /
kjournald 3463 root rtd DIR 8,5 4096 2 /
kjournald 3463 root txt unknown /proc/3463/exe
krfcommd 4048 root cwd DIR 8,5 4096 2 /
krfcommd 4048 root rtd DIR 8,5 4096 2 /
krfcommd 4048 root txt unknown /proc/4048/exe
pdflush 6018 root cwd DIR 8,5 4096 2 /
pdflush 6018 root rtd DIR 8,5 4096 2 /
pdflush 6018 root txt unknown /proc/6018/exe
udevd 10990 root cwd DIR 8,5 4096 2 /
udevd 10990 root rtd DIR 8,5 4096 2 /
udevd 10990 root txt REG 8,5 99948 7631 /sbin/udevd
udevd 10990 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
udevd 10990 root mem REG 8,5 50746 1769 /lib/libnss_files-2.10.1.so
udevd 10990 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
udevd 10990 root 0u CHR 1,3 0t0 1185 /dev/null
udevd 10990 root 1u CHR 1,3 0t0 1185 /dev/null
udevd 10990 root 2u CHR 1,3 0t0 1185 /dev/null
udevd 10990 root 3r DIR 0,9 0 1 inotify
udevd 10990 root 4u unix 0xf1959000 0t0 56175 socket
udevd 10990 root 5u sock 0,4 0t0 56176 can't identify protocol
syslog-ng 13248 root cwd DIR 8,5 4096 2 /
syslog-ng 13248 root rtd DIR 8,5 4096 2 /
syslog-ng 13248 root txt REG 8,5 235740 3439 /usr/sbin/syslog-ng
syslog-ng 13248 root mem REG 8,5 17914 1987 /lib/libattr.so.1.1.0
syslog-ng 13248 root mem REG 8,5 98082 1786 /lib/libnsl-2.10.1.so
syslog-ng 13248 root mem REG 8,5 82987 172784 /usr/lib/libz.so.1.2.3.3
syslog-ng 13248 root mem REG 8,5 13771 1744 /lib/libdl-2.10.1.so
syslog-ng 13248 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
syslog-ng 13248 root mem REG 8,5 211279 2024 /lib/libpcre.so.0.0.1
syslog-ng 13248 root mem REG 8,5 15405 1991 /lib/libcap.so.2.16
syslog-ng 13248 root mem REG 8,5 34551 3638 /usr/lib/libwrap.so.0.7.6
syslog-ng 13248 root mem REG 8,5 1561754 55876 /usr/lib/libcrypto.so.0.9.8
syslog-ng 13248 root mem REG 8,5 317643 64401 /usr/lib/libssl.so.0.9.8
syslog-ng 13248 root mem REG 8,5 16703 35966 /usr/lib/libevtlog.so.0.0.0
syslog-ng 13248 root mem REG 8,5 875900 2512 /usr/lib/libglib-2.0.so.0.2000.4
syslog-ng 13248 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
syslog-ng 13248 root 0r CHR 1,3 0t0 1185 /dev/null
syslog-ng 13248 root 1w CHR 1,3 0t0 1185 /dev/null
syslog-ng 13248 root 2w CHR 1,3 0t0 1185 /dev/null
syslog-ng 13249 root cwd DIR 8,5 4096 474297 /var/run
syslog-ng 13249 root rtd DIR 8,5 4096 2 /
syslog-ng 13249 root txt REG 8,5 235740 3439 /usr/sbin/syslog-ng
syslog-ng 13249 root mem REG 8,5 17914 1987 /lib/libattr.so.1.1.0
syslog-ng 13249 root mem REG 8,5 98082 1786 /lib/libnsl-2.10.1.so
syslog-ng 13249 root mem REG 8,5 82987 172784 /usr/lib/libz.so.1.2.3.3
syslog-ng 13249 root mem REG 8,5 13771 1744 /lib/libdl-2.10.1.so
syslog-ng 13249 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
syslog-ng 13249 root mem REG 8,5 211279 2024 /lib/libpcre.so.0.0.1
syslog-ng 13249 root mem REG 8,5 15405 1991 /lib/libcap.so.2.16
syslog-ng 13249 root mem REG 8,5 34551 3638 /usr/lib/libwrap.so.0.7.6
syslog-ng 13249 root mem REG 8,5 1561754 55876 /usr/lib/libcrypto.so.0.9.8
syslog-ng 13249 root mem REG 8,5 317643 64401 /usr/lib/libssl.so.0.9.8
syslog-ng 13249 root mem REG 8,5 16703 35966 /usr/lib/libevtlog.so.0.0.0
syslog-ng 13249 root mem REG 8,5 875900 2512 /usr/lib/libglib-2.0.so.0.2000.4
syslog-ng 13249 root mem REG 8,5 50746 1769 /lib/libnss_files-2.10.1.so
syslog-ng 13249 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
syslog-ng 13249 root 0r CHR 1,3 0t0 1185 /dev/null
syslog-ng 13249 root 1w CHR 1,3 0t0 1185 /dev/null
syslog-ng 13249 root 2w CHR 1,3 0t0 1185 /dev/null
syslog-ng 13249 root 3u unix 0xf1958400 0t0 58926 /dev/log
syslog-ng 13249 root 4w FIFO 0,6 0t0 58922 pipe
syslog-ng 13249 root 5u unix 0xf1959800 0t0 58929 /var/run/syslog-ng.ctl
syslog-ng 13249 root 6r REG 0,3 0 4026531978 /proc/kmsg
syslog-ng 13249 root 7w REG 8,5 40938 475550 /var/log/syslog.log
syslog-ng 13249 root 8w REG 8,5 17572696 475551 /var/log/everything.log
syslog-ng 13249 root 9w REG 8,5 11246832 475552 /var/log/kernel.log
syslog-ng 13249 root 10w REG 8,5 14397607 475553 /var/log/messages.log
syslog-ng 13249 root 12w REG 8,5 5666055 475561 /var/log/daemon.log
init 13252 root cwd DIR 8,5 4096 2 /
init 13252 root rtd DIR 8,5 4096 2 /
init 13252 root txt REG 8,5 31352 37632 /sbin/init
init 13252 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
init 13252 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
init 13252 root 0u CHR 5,1 0t0 1177 /dev/console
init 13252 root 1u CHR 5,1 0t0 1177 /dev/console
init 13252 root 2u CHR 5,1 0t0 1177 /dev/console
bash 13253 root cwd DIR 8,5 4096 22 /root
bash 13253 root rtd DIR 8,5 4096 2 /
bash 13253 root txt REG 8,5 607644 64366 /bin/bash
bash 13253 root mem REG 8,5 1821760 130893 /usr/lib/locale/locale-archive
bash 13253 root mem REG 8,5 50746 1769 /lib/libnss_files-2.10.1.so
bash 13253 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
bash 13253 root mem REG 8,5 13771 1744 /lib/libdl-2.10.1.so
bash 13253 root mem REG 8,5 345186 2004 /lib/libncursesw.so.5.7
bash 13253 root mem REG 8,5 33753 10766 /lib/libhistory.so.6.0
bash 13253 root mem REG 8,5 245785 10765 /lib/libreadline.so.6.0
bash 13253 root mem REG 8,5 11125 62090 /usr/lib/gconv/ISO8859-1.so
bash 13253 root mem REG 8,5 35764 302973 /usr/share/locale/de/LC_MESSAGES/bash.mo
bash 13253 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
bash 13253 root 0u CHR 5,1 0t0 1177 /dev/console
bash 13253 root 1u CHR 5,1 0t0 1177 /dev/console
bash 13253 root 2u CHR 5,1 0t0 1177 /dev/console
bash 13253 root 255u CHR 5,1 0t0 1177 /dev/console
lsof 13304 root cwd DIR 8,5 4096 22 /root
lsof 13304 root rtd DIR 8,5 4096 2 /
lsof 13304 root txt REG 8,5 122304 57 /usr/sbin/lsof
lsof 13304 root mem REG 8,5 1821760 130893 /usr/lib/locale/locale-archive
lsof 13304 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
lsof 13304 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
lsof 13304 root 0u CHR 5,1 0t0 1177 /dev/console
lsof 13304 root 1w REG 8,5 0 75 /root/lsof_out
lsof 13304 root 2u CHR 5,1 0t0 1177 /dev/console
lsof 13304 root 3r DIR 0,3 0 1 /proc
lsof 13304 root 4r DIR 0,3 0 59163 /proc/13304/fd
lsof 13304 root 5w FIFO 0,6 0t0 59168 pipe
lsof 13304 root 6r FIFO 0,6 0t0 59169 pipe
lsof 13305 root cwd DIR 8,5 4096 22 /root
lsof 13305 root rtd DIR 8,5 4096 2 /
lsof 13305 root txt REG 8,5 122304 57 /usr/sbin/lsof
lsof 13305 root mem REG 8,5 1821760 130893 /usr/lib/locale/locale-archive
lsof 13305 root mem REG 8,5 1584604 1986 /lib/libc-2.10.1.so
lsof 13305 root mem REG 8,5 133581 1984 /lib/ld-2.10.1.so
lsof 13305 root 4r FIFO 0,6 0t0 59168 pipe
lsof 13305 root 7w FIFO 0,6 0t0 59169 pipeDoes anyone have an Idea what to do? Thanks!
Johannes
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#2 2009-08-17 13:16:12
- Profjim
- Member
- From: NYC
- Registered: 2008-03-24
- Posts: 658
Re: Unmounting root fs fails on shutdown
I noticed one thing, but that's not to say there's not other problems too: your syslog-ng is still running. At that point in shutdown, I think all your daemons including it should be shut down. I don't know why it's still running. Do you just launch it by putting "syslog-ng" in your DAEMONS array in /etc/rc.conf? It's possible that you're not really getting an accurate picture here of the state of your system at shutdown. I debug these issues by hacking /etc/rc.shutdown. Before the "Unmounting Filesystems" block you could do a
lsof / # I think this is the way to display only open files on the root filesystem, but you should read man lsof to be sure
ls /var/run/daemons
read -p "continue? " reply # pause here
...rest of /etc/rc.shutdownOffline
#3 2009-10-16 16:59:52
- imrehg
- Member
- From: London, UK
- Registered: 2008-04-10
- Posts: 108
- Website
Re: Unmounting root fs fails on shutdown
I haven't checked it to this much detail yet, but I think I have the same issue for while too...
Almost (but not quite) every shutdown I have a "/ is busy" message. After this the file system has to be checked at every boot... That's a lot of time just sitting around while e2fsck runs on the whole drive....
Any suggestions? Is there a race condition somewhere in the shutdown script? I have another computer that I manage with Arch on it, and that has no such problem, so still checking the differences between them in software/hardware...
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